Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Chapter
Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSN › Chapter
}
TY - CHAP
T1 - Large scale primordial magnetic fields from inflation and preheating
AU - Tornkvist, Ola
AU - Davis, Anne-Christine
AU - Dimopoulos, Konstantinos
AU - Prokopec, Tomislav
PY - 2000
Y1 - 2000
N2 - We consider models in which the (transverse) photon mass is non-zero during inflation and drops to zero non-adiabatically at the end of inflation. Through this process, vacuum fluctuations of the photon field are converted into physical, long-wavelength modes with high amplitude. The resulting spectrum of the field strength is approximately B_l ~ 1/l, where l is the relevant coherence scale. With a reasonable model of field evolution we obtain, on comoving galactic scales, a magnetic field strong enough to seed a dynamo mechanism and generate the observed galactic magnetic fields.
AB - We consider models in which the (transverse) photon mass is non-zero during inflation and drops to zero non-adiabatically at the end of inflation. Through this process, vacuum fluctuations of the photon field are converted into physical, long-wavelength modes with high amplitude. The resulting spectrum of the field strength is approximately B_l ~ 1/l, where l is the relevant coherence scale. With a reasonable model of field evolution we obtain, on comoving galactic scales, a magnetic field strong enough to seed a dynamo mechanism and generate the observed galactic magnetic fields.
M3 - Chapter
SP - 443
EP - 446
BT - COSMOLOGY AND PARTICLE PHYSICS: CAPP 2000: Proceedings
A2 - Durrer, Ruth
A2 - Garcia- Bellido, Juan
A2 - Shaposhnikov, Mikhail
PB - American Institute of Physics
CY - Melville, N.Y.
ER -